Insulation blanket

Abstract

Insulation blankets featuring a thermoplastic polyolefin protective covering.

What is claimed is: 
     
       1. An insulation blanket comprising a composite encased with a heat-sealable polymer, said heat-sealable polymer comprising a flame retardant thermoplastic polyolefin, said composite comprising fibrous insulation, foam insulation, or a combination thereof and a high temperature-resistant layer adjacent said insulation. 
     
     
       2. The blanket of claim 1 wherein said high temperature-resistant layer is adhered to said insulation. 
     
     
       3. The blanket of claim 1 wherein said high temperature-resistant layer comprises ceramic fibers. 
     
     
       4. The blanket of claim 1 wherein said high temperature-resistant layer comprises a non-woven scrim comprising entangled ceramic oxide fibers. 
     
     
       5. The blanket of claim 1 wherein said insulation comprises a lofty non-woven mat comprising thermoplastic fibers. 
     
     
       6. The blanket of claim 1 wherein said blanket is essentially free of glass fibers. 
     
     
       7. The blanket of claim 1 wherein said thermoplastic polyolefin is selected from the group consisting of polyethylene, polypropylene, an ethylene-propylene copolymer, and a combination thereof. 
     
     
       8. The blanket of claim 1 wherein said thermoplastic polyolefin is rubber-toughened. 
     
     
       9. The blanket of claim 1 further comprising a check valve configured to allow air to escape from said blanket while substantially preventing moisture from entering said blanket. 
     
     
       10. The blanket of claim 1 further comprising a vapor-permeable layer configured to allow air to escape from said blanket while substantially preventing moisture from entering said blanket. 
     
     
       11. An insulation blanket comprising a composite encased within a heat-sealable polymer comprising a flame retardant, rubber-toughened, thermoplastic polyolefin, said composite comprising a lofty non-woven mat comprising thermoplastic fibers and a high temperature-resistant layer comprising ceramic fibers adjacent said mat. 
     
     
       12. An insulation blanket comprising fibrous insulation, foam insulation, or a combination thereof supported on one face of a vapor-permeable backing sheet and a heat-sealable polymer comprising a thermoplastic polyolefin sealed to said face of said vapor-permeable backing sheet. 
     
     
       13. The blanket of claim 12 further comprising a high temperature-resistant layer adjacent said insulation. 
     
     
       14. The blanket of claim 12 wherein said thermoplastic polyolefin is rubber-toughened.